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52713031 = 7103113647
BaseRepresentation
bin1100100100010…
…1011001000111
310200012002200111
43021011121013
5101443304111
65121453451
71210024210
oct311053107
9120162614
1052713031
1127834098
12157a1287
13abc8257
147002407
154963a21
hex3245647

52713031 has 16 divisors (see below), whose sum is σ = 61461504. Its totient is φ = 44279424.

The previous prime is 52713029. The next prime is 52713041. The reversal of 52713031 is 13031725.

It is not a de Polignac number, because 52713031 - 21 = 52713029 is a prime.

It is a super-2 number, since 2×527130312 = 5557327274413922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52712993 and 52713011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52713041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81150 + ... + 81796.

It is an arithmetic number, because the mean of its divisors is an integer number (3841344).

Almost surely, 252713031 is an apocalyptic number.

52713031 is a deficient number, since it is larger than the sum of its proper divisors (8748473).

52713031 is a wasteful number, since it uses less digits than its factorization.

52713031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 52713031 is about 7260.3740261780. The cubic root of 52713031 is about 374.9493999875.

Adding to 52713031 its reverse (13031725), we get a palindrome (65744756).

The spelling of 52713031 in words is "fifty-two million, seven hundred thirteen thousand, thirty-one".

Divisors: 1 7 103 113 647 721 791 4529 11639 66641 73111 81473 466487 511777 7530433 52713031